E-viri
Recenzirano
Odprti dostop
-
Pino, Lorenzo; Désert, Jean-Michel; Brogi, Matteo; Malavolta, Luca; Wyttenbach, Aurélien; Line, Michael; Hoeijmakers, Jens; Fossati, Luca; Bonomo, Aldo Stefano; Nascimbeni, Valerio; Panwar, Vatsal; Affer, Laura; Benatti, Serena; Biazzo, Katia; Bignamini, Andrea; Borsa, Franscesco; Carleo, Ilaria; Claudi, Riccardo; Cosentino, Rosario; Covino, Elvira; Damasso, Mario; Desidera, Silvano; Giacobbe, Paolo; Harutyunyan, Avet; Lanza, Antonino Francesco; Leto, Giuseppe; Maggio, Antonio; Maldonado, Jesus; Mancini, Luigi; Micela, Giuseppina; Molinari, Emilio; Pagano, Isabella; Piotto, Giampaolo; Poretti, Ennio; Rainer, Monica; Scandariato, Gaetano; Sozzetti, Alessandro; Allart, Romain; Borsato, Luca; Bruno, Giovanni; Fabrizio, Luca Di; Ehrenreich, David; Fiorenzano, Aldo; Frustagli, Giuseppe; Lavie, Baptiste; Lovis, Christophe; Magazzù, Antonio; Nardiello, Domenico; Pedani, Marco; Smareglia, Riccardo
Astrophysical journal. Letters, 05/2020, Letnik: 894, Številka: 2Journal Article
We present the first detection of atomic emission lines from the atmosphere of an exoplanet. We detect neutral iron lines from the dayside of KELT-9b (Teq ∼ 4000 K). We combined thousands of spectrally resolved lines observed during one night with the HARPS-N spectrograph (R ∼ 115,000), mounted at the Telescopio Nazionale Galileo. We introduce a novel statistical approach to extract the planetary parameters from the binary mask cross-correlation analysis. We also adapt the concept of contribution function to the context of high spectral resolution observations, to identify the location in the planetary atmosphere where the detected emission originates. The average planetary line profile intersected by a stellar G2 binary mask was found in emission with a contrast of 84 14 ppm relative to the planetary plus stellar continuum (40% 5% relative to the planetary continuum only). This result unambiguously indicates the presence of an atmospheric thermal inversion. Finally, assuming a modeled temperature profile previously published, we show that an iron abundance consistent with a few times the stellar value explains the data well. In this scenario, the iron emission originates at the 10−3-10−5 bar level.
Avtor
Vnos na polico
Trajna povezava
- URL:
Faktor vpliva
Dostop do baze podatkov JCR je dovoljen samo uporabnikom iz Slovenije. Vaš trenutni IP-naslov ni na seznamu dovoljenih za dostop, zato je potrebna avtentikacija z ustreznim računom AAI.
Leto | Faktor vpliva | Izdaja | Kategorija | Razvrstitev | ||||
---|---|---|---|---|---|---|---|---|
JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
Baze podatkov, v katerih je revija indeksirana
Ime baze podatkov | Področje | Leto |
---|
Povezave do osebnih bibliografij avtorjev | Povezave do podatkov o raziskovalcih v sistemu SICRIS |
---|
Vir: Osebne bibliografije
in: SICRIS
To gradivo vam je dostopno v celotnem besedilu. Če kljub temu želite naročiti gradivo, kliknite gumb Nadaljuj.